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Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

1.0K
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
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Measurement of Blood Pressure01:17

Measurement of Blood Pressure

2.3K
Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a...
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The Cochlea01:13

The Cochlea

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
49.7K
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

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Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
2.9K
Neural Regulation of Blood Pressure01:18

Neural Regulation of Blood Pressure

6.4K
The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
6.4K
Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

3.5K
Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
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Related Experiment Video

Updated: Dec 11, 2025

Cryosectioning and Immunostaining Mouse Inner Ear Tissue: From Embryonic to Adult Stages
09:09

Cryosectioning and Immunostaining Mouse Inner Ear Tissue: From Embryonic to Adult Stages

Published on: April 11, 2025

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Association Between Nonoptimal Blood Pressure and Cochlear Function.

Rachael R Baiduc1, Michael Ramsey2, Amy Sanders1

  • 1Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder, Boulder, Colorado, USA.

Ear and Hearing
|August 23, 2020
PubMed
Summary

Subtle elevation in blood pressure (BP) was not linked to poorer hearing or cochlear function in adults. Further research is needed to understand the impact of hypertension on hearing health.

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Area of Science:

  • Audiology
  • Cardiovascular Health
  • Otoacoustic Emissions

Background:

  • Numerous studies explore the link between hearing loss and cardiovascular disease risk factors like high blood pressure (BP).
  • Existing research often focuses on BP's effect on behavioral hearing sensitivity, with mixed findings.
  • The impact of nonoptimal BP on cochlear integrity remains less understood.

Purpose of the Study:

  • To investigate cochlear function using distortion product otoacoustic emissions (DPOAEs) in individuals with nonoptimal BP.
  • To determine if nonoptimal BP is associated with poorer cochlear function.

Main Methods:

  • Sixty adults (55% male, mean age 31.82) underwent pure-tone audiometry and DPOAE measurements.
  • Blood pressure was measured, categorizing participants into optimal or nonoptimal BP groups.
  • Correlations between BP levels, hearing thresholds, and DPOAEs were analyzed using statistical models.

Main Results:

  • Significant positive correlations were found between diastolic BP and hearing thresholds across various frequencies.
  • Diastolic and systolic BP correlated significantly with DPOAE levels at high frequencies.
  • The nonoptimal BP group exhibited statistically significant lower DPOAE levels (1.50 dB poorer) than the optimal BP group.

Conclusions:

  • While correlations exist between BP and hearing measures, adjusted models suggest other factors are primary drivers of auditory dysfunction.
  • Contrary to the hypothesis, subtle BP elevation was not definitively linked to poorer hearing sensitivity or cochlear dysfunction.
  • Further studies on hypertension and hearing health are warranted, potentially utilizing otoacoustic emissions (OAEs).